Genus one 1-bridge knots and Dunwoody manifolds*

Genus one 1-bridge knots and Dunwoody manifolds*
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属一 1 桥结和 Dunwoody 流形*

DOI:
10.1515/form.2001.013
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
M. Mulazzani
M. Mulazzani
中科院分区:
--
文献类型:
--
作者:
L. Grasselli;M. Mulazzani

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本文证明了M. J. Dunwoody是透镜空间(可能是S 3)的循环覆盖,分支于亏格1-桥结.因此,我们给出了一个肯定的答案邓伍迪猜想,所有的元素的宽子类是循环覆盖的S3分支上的一个结。此外,我们还证明了2-桥纽结的所有分支循环覆盖都属于这个子类,这意味着2-桥纽结的每个分支循环覆盖的基本群都有一个几何循环表示.
In this paper we show that all 3-manifolds of a family introduced by M. J. Dunwoody are cyclic coverings of lens spaces (possibly S 3 ), branched over genus one 1-bridge knots. As a consequence, we give a positive answer to the Dunwoody conjecture that all the elements of a wide subclass are cyclic coverings of S 3 branched over a knot. Moreover, we show that all branched cyclic coverings of a 2-bridge knot belong to this subclass; this implies that the fun- damental group of each branched cyclic covering of a 2-bridge knot admits a geometric cyclic presentation.
结投影的不可约性和可约性
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
Satoshi Mayama;et al.;Yasuyuki T. Tanaka;清水理佳
通讯作者: 清水理佳